We propose a new scripting model for rapid and easier development of packet processing using shell scripts. In this paper we present EtherPIPE, a character network I/O device, that allows the programmer to access network traffic data as a file through UNIX commands. By setting a UNIX pipe "|" from or to EtherPIPE's output or input with UNIX commands, packets can be easily processed, executing func...
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The low-cost, self-configuration capability and "plug-and-play" feature of Ethernet establishes its dominant position in the local area networks (LAN). However, it is hard to extend to large scale because of the legacy broadcast-based service discovery mechanism. Therefore, to solve this problem, a new split network architecture named Software-Defined Networking (SDN) is introduced in this paper, ...
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Software-Defined Network architecture offers network virtualization through a hypervisor plane to share the same physical substrate among multiple virtual networks. However, for this hypervisor plane, how to map a virtual network to the physical substrate while guaranteeing the survivability in the event of failures, is extremely important. In this paper, we present an efficient virtual network ma...
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By decoupling control plane and data plane, Software-Defined Networking (SDN) approach simplifies network management and speeds up network innovations. These benefits have led not only to prototypes, but also real SDN deployments. For wide-area SDN deployments, multiple controllers are often required, and the placement of these controllers becomes a particularly important task in the SDN context. ...
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The control and data planes are decoupled in software-defined networking (SDN), which enables both planes to evolve independently, and brings about many advantages such as high flexibility, programmability, and rapid implementation of new network protocols. However, in order to improve the scalability of the control plane at present, some control functionalities are added to the data plane, which ...
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Software-Defined Network (SDN) empowers the evolution of Internet with the OpenFlow, Network Virtualization and Service Slicing strategies. With the fast increasing requirements of Mobile Internet services, the Internet and Mobile Networks go to the convergence. Mobile Networks can also get benefits from the SDN evolution to fulfill the 5th Generation (5G) capacity booming. The article implements ...
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In optical performance monitoring system, the analog to digital converter is needed to detect the peak of nanosecond pulse and get the signal envelope. A scheme based on a designed anti-aliasing filter and analog to digital converter is proposed to broaden the nanosecond pulse and make it easier for the analog to digital converter to catch the peak of the nanosecond pulse. The experimental results...
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The ergodic information rate for Orthogonal Frequency-Division Multiplexing / Orthogonal Frequency-Division Multiple Access with amplify-and-forward (AF) relaying systems in the presence of frequency offsets is evaluated. Unlike previous work, per-subcarrier adaptive power allocation is performed on each relay to optimize the system ergodic information rate. For a given frequency offset and total ...
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Mobile Ad hoc Networks (MANETs) play an important role in emergency communications where network needs to be constructed temporarily and quickly. Since the nodes move randomly, routing protocols must be highly effective and reliable to guarantee successful packet delivery. Based on the data delivery structure, most of the existing multicast routing protocols can be classified into two folders: tre...
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Recent rapid rise of indoor location based services for smartphones has further increased the importance of precise localization of Wi-Fi Access Point (AP). However, most existing AP localization algorithms either exhibit high errors or need specialized hardware in practical scenarios. In this paper, we propose a novel RSSI gradient-based AP localization algorithm. It consists of the following thr...
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Differently from the general online social network (OSN), location-based mobile social network (LMSN), which seamlessly integrates mobile computing and social computing technologies, has unique characteristics of temporal, spatial and social correlation. Recommending friends instantly based on current location of users in the real world has become increasingly popular in LMSN. However, the existin...
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Forwarding is a major means of information dissemination on the Microblog platform. The article, combining static analysis and dynamic analysis, takes Microblog forwarding as the object of study, and studies the network topology of grass-roots Microblog forwarding users. It also studies the correlation between characteristic quantity and forwarding times of Microblog network topology. Furthermore,...
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In order to conduct a comparative analysis on China's Telecommunications/ICT regulation effectiveness to make up the omission of international researches, and to find out the difference between China and other countries and try to improve China's ICT regulation effectiveness, this paper developed an extended, integrated ICT regulation effectiveness assessment framework, with a name of IEP framewor...
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Trust management has been proven to be a useful technology for providing security service and as a consequence has been used in many applications such as P2P, Grid, ad hoc network and so on. However, few researches about trust mechanism for Internet of Things (IoT) could be found in the literature, though we argue that considerable necessity is held for applying trust mechanism to IoT. In this pap...
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Aims & Scope

China Communications, published in English and in conformance with IEEE editorial standards, covers innovative technologies and systems in the broad field of Information- Communication Technology (ICT).